Today will be cloudy across the south-west with a slight 20 per cent chance of a shower in the morning and early afternoon. There will be light winds. Warrnambool is expecting a top of 19 degrees, Hamilton 21, Colac 20, Ararat 20, Casterton 22, Mortlake 21, Heywood 21, Portland 20, Port Fairy 19, Terang 18 and Camperdown 17. A high pressure system near the South Australian border will move rapidly eastwards across the state today, reaching the Tasman Sea this evening. The high will extend a ridge across Victoria on Thursday, then weaken as another high crosses Tasmania on Friday then persists over the Tasman Sea on Saturday. Warrnambool is expecting a top of 19 on Thursday, 20 on Friday, 24 on Saturday and 26 on Sunday. Have you signed up to The Standard's daily newsletter and breaking news emails? You can register below and make sure you are up to date with everything that's happening in the south-west.